Extension table



y 1940- c. F. VANCE EXTENSION TABLE 2 Sheets-Sheet 1 Original FiledApril 20, 1936 w W -m W F x; J fi 3 ac w w m m mi mfi m m 2 E i R E w:.n E E E .s fi as A m 2 u u 3 m 1 3 I E 3% May 21, 1940. c; F. vANcEXTENS ION TABLE Original Filed April 20, 1936 2 Sheets-Sheet. 2

CHARES F VAnc Patented May 21, 1940 UNITED STATES PATENT OFFICE Originalapplication April 20, 1936, Serial No. 75,435. Divided and thisapplication February 18, 1938, Serial No. 191,347

1 Claim.

This invention relates to an improvement in extension tables, and thisapplication is a division of application Serial No. 75,435, filed by mein the United States Patent Oiiice April 20, 1936.

One object is to provide an assembly which includes equalizers alongwith the remaining cooperating mechanism for preventing binding of theparts in opening and closing the table.

In order to accomplish this purpose, suitable equalizing means areprovided and these are disposed between the table ends, so that when oneof the leaves is moved, the other leaf will be simultaneously moved acorresponding amount in the opposite direction.

In the accompanying drawings:

Fig. 1 is a top plan view with the end leaves shown in dotted lines;

Fig. 2 is an isometric view of one side of the structure shown in Fig.1;

Fig. 3 is a cross-sectional view taken along the line 3-3 of Fig. l; and

Fig. 4 is a cross-sectional view taken along the line l4 of Fig. 1.

Trackways 2! and 2!" have mounted therein suitable movable U-shapedmembers H5, H6, H1 and IE8, and balls 3| are provided to facilitate theeasy movement between the members 2i and 2l and the members H5 to H8inclusive. The members I15 to H8 inclusive have mounted thereon suitableangle members H9, I20, I2I and I23 to which the table top leaves I23 andI24 are secured. The vertical web of U-shaped members II! and H8 havestrap members I25 and I26, respectively, secured thereto, which strapmembers project inwardly toward the center of the table and havepivotally secured to the ends thereof as at I21 and I28, suitable linksI29 and I33. These links are also pivotally connected as at I3i and I32to crossed levers I33 and I34, said levers being pivotally secured at acommon point I35 which is equidistant from the Z-shaped members 22 and22 and they are pivotally supported on an arm I31 projecting from one ofthe struts d2 of the inner frame of the mechanism, to a strut I36, whichlatter is secured at its ends to the Z-shaped members 22 and 22'.

. Levers I33 and I34 have suitable slots I40 and MI in their other endswhich are adapted to cooperate with slots I42 and I43 in the outstandingleg of angle straps I44 and I45, said straps being secured to anglemembers I20 and H9, respectively, to loosely and movably receive thebolts I46 and I41. It is evident that in providing an arrangement ofthis type when the table top I23 for instance, is moved to the left inFigure 1, the table top I24 will be caused to move to the right sincethe lever and link arrangement comprising members I29, I30, I33 and I34with their associated parts will produce an equalizing effect.

The trackways 2| and 2| have suitable stops M9 disposed midway thereinfor limiting the inward movement of the movable members II5 to H8inclusive should the table tops I23 and I24 not be connected thereto.This is especially important during the shipment of the unit assemblywhich is usually done before the table tops and the supports areconnected.

It is evident that reasonably satisfactory results could be obtained byemploying only one of the levers I33 or I34 and their associated parts.For example, lever I 33, link I29 and the lug angles I25 and I44 couldbe used which would provide a connection between the movable members 6and I I1. With only these two members connected, if the table tops I23and I24 were properly secured to the members H9 to I2I inclusive, themovement of one table top or leaf would produce an opposite movement inthe other. However, in order to absolutely insure against binding, ithas been found preferable to use a pair of levers.

I claim:

In an extension table, the combination of rail members in spacedparallel relationship, extension leaves supported by and slidabliconnected therewith, an inner frame comprising slides and ends, thelatter secured between and to the centers of the rail members, a strutoutside of the frame and parallel to the sides thereof, a braceextending from the center of the strut to one side of the frame, a leverpivoted at its center to the center of the strut, a link pivotallyconnected with one end of the lever and extending directly across theinner frame, and having its other end pivotally connected with one ofthe 45

